The entire powertrain, chassis, and interior execution of the Surf are identical to the Karma sedan, with the only major cabin change being the additional room in back for a couple of adults. We had a six-foot colleague get situated comfortably in the driver’s seat while we sat our 5’11? body in the rear seat. Memories of the Aston Martin Rapide’s “rear-passenger capsule” sensation came up, but the only insufficiency really is foot room beneath the front squabs.